Chemistry EOC

The properties of all types of matter

• Can never change

• Depends on composition and arrangement of atoms

• Are the same

• None of these

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Why do scientists use models to try to understand things like molecules?

Tags

NGSS.MS-PS1-1

Change in state of matter is

• a chemical change

• a physical change

• a permanent change

• unchangeable

Tags

NGSS.MS-PS1-4

The ingredients in a chemical reaction are called the

• products

• ingredients

• reactants

• samples

When using chemicals in a lab, you should

• wear gloves

• wear safety goggles

• follow directions

• waft instead of inhaling deeply

• all of the above

When a chemical reaction has a product that is solid, the solid is known

as

• A solid product

• A hard product

• A precipitate

• combustion

Tags

NGSS.MS-PS1-2

Chemical reactions are

• Rare and only seen in a lab

• Always explosive and dramatic

• Dangerous

• Occurring in our everyday life, such as cooking

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this equation balanced?

• yes

• no

• Not enough information

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this equation balanced?

• yes

• no

• Not enough information

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Molecules spread out and move FAST!

• solid

• gas

• liquid

Tags

NGSS.MS-PS1-4